air shifters require a ratchet or sequential shift transmission. they're primarily for drag racing in a "semi-automatic" configuration and normally they're only designed to upshift.
i've seen some air shift setups on street bikes tho.
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1997 Prelude, H23A1 VTEC
Items for sale:
H22/23 block and all internal parts
4 5th gen Prelude wheels, 16x6.5, 5x114.3mm bolt pattern
More stuff for sale:
https://www.tamparacing.com/forums/showthread.php?s=&postid=472993#post472993